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umbonate

[uhm-buh-nit, -neyt] /ˈʌm bə nɪt, -ˌneɪt/
adjective
1.
having an umbo or projecting boss.
2.
shaped like an umbo; having a rounded convex form:
an umbonate fungus.
Origin
1820-1830
1820-30; < Latin umbōn- (stem of umbō; see umbo) + -ate1
Related forms
subumbonate, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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